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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
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package org.apache.doris.catalog;

import org.apache.doris.analysis.PartitionKeyDesc;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.io.Writable;

import java.util.Comparator;
import java.util.Map;
import java.util.Optional;

public abstract class PartitionItem implements Comparable<PartitionItem>, Writable {
    public static final Comparator<Map.Entry<Long, PartitionItem>> ITEM_MAP_ENTRY_COMPARATOR =
            Comparator.comparing(o -> ((ListPartitionItem) o.getValue()).getItems().iterator().next());

    public abstract <T> T getItems();

    public abstract PartitionItem getIntersect(PartitionItem newItem);

    public boolean isDefaultPartition() {
        return false;
    }

    public abstract PartitionKeyDesc toPartitionKeyDesc();

    /**
     * Generate PartitionKeyDesc using only the posth PartitionValue
     *
     * @param pos
     * @return
     * @throws AnalysisException
     */
    public abstract PartitionKeyDesc toPartitionKeyDesc(int pos) throws AnalysisException;

    /**
     * Check if the partition meets the time requirements
     *
     * @param pos The position of the partition column to be checked in all partition columns
     * @param dateFormatOptional Convert other types to date format
     * @param nowTruncSubSec The time to compare
     * @return
     * @throws AnalysisException
     */
    public abstract boolean isGreaterThanSpecifiedTime(int pos, Optional<String> dateFormatOptional,
            long nowTruncSubSec)
            throws AnalysisException;
}
